diff --git a/style.css b/style.css
index d8fed5c..956f6f7 100644
--- a/style.css
+++ b/style.css
@@ -17,4 +17,5 @@ body > {
 canvas{
     height: 100%;
     width: 100%;
+    border: 1px solid black;
 }
\ No newline at end of file